[cma-l] Audio crackling

[Ian Hickling]

Peter
Maybe too simplistic, but have you checked the audio coming out of the soundcard in the fault condition before it goes anywhere else?
If the crackling is there - regardless of heating/coolling/rebooting, then it's the soundcard.
We've found even the best and newest ones can suffer from poor joints.
If not, then it's happening after that and ,likely to be a connectivity/software/memory issue.

------------------------------------
Ian Hickling
Partner
transplan UK
 


> Date: Mon, 31 Oct 2011 11:28:11 +0000
> From: studio at ravensoundradio.co.uk
> To: admin at londonhuayu.co.uk
> CC: cma-l at commedia.org.uk
> Subject: Re: [cma-l] Audio crackling
> 
> Greetings Peter,
> 
> I saw you mention multicast on another thread here. As I understand it,
> this involves sending a stream to the network routers where it is split
> into client (listener) streams. Unfortunately it depends on the network
> operators to implement it and I don't think the majors are about to.
> Ubuntu Linux has some sort of built-in logging system which is
> apparently needed to identify customers, so if you can find a network
> operator who has the system, it is potentially available.
> 
> Re the crackling, I don't know if you are running a server as well on
> this pc but the old kit we had used to bleep if it was hot not crackle!
> 
> Seriously, if a reboot solves it I would check out the software for the
> processor loading and memory usage, in geek-talk a memory leak for
> example which is time-dependent.
> 
> Regards, Tony Bailey
> 
> London Chinese Radio wrote:
> > Hi,
> > 
> > I wonder if anyone has had problems with audio crackling?
> > I have recently changed to a different streaming PC, (because it was XP, 
> > and I had a Marian marc8 midi sound card which has 8 ins and outs, but 
> > doesn't support Win7), and it was fine for about a month, until it 
> > started crackling. I put all the audio on a seperate HD, and because 
> > they are quite close together, I also fitted a large fan next to them, 
> > which delivers quite an icy blast across the disks.
> > It starts crackling after a few hours, and it ruins the stream. It is 
> > solvable by rebooting. I originally thought it could be something 
> > overheating, but since it is solved by rebooting, without the time for 
> > anything to cool down, I don't think that is it.
> > 
> > System info:
> > 
> > Airmate out into Soundcard in (channels 1 & 2)
> > mAirlist (6 Channels) and computer audio (2 channels) via Soundcard outs 
> > into Airmate channels
> > Asus P5K-VM motherboard with an Intel Core2 duo CPU. (it's a Red Sub 
> > computer with a few extra things I've added) 
> > The CPU cooler is a bog standard one but with a funnel that directs the 
> > hot air out of a vent on the side.
> > 
> > Anyway, if you have an idea, I'd really appreciate any advice.
> > 
> > 
> > Peter Vautier
> > London Chinese Radio
> > -- 
> > 
> > 
> > 野火烧不尽，春风吹又生
> > 
> > 
> > 
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